change Union[float,int] to float per PEP 484

Author: tammymakesthings

adafruit_as726x.py

@@ -32,7 +32,7 @@
 from micropython import const
 
 try:
-    from typing import Tuple, Optional, Union
+    from typing import Tuple, Optional
 
     # This is only needed for typing
     import busio  # pylint: disable=unused-import
@@ -394,10 +394,10 @@ def raw_red(self) -> int:
         """Raw red (650nm) 16-bit value"""
         return self.read_channel(_AS7262_RED)
 
-    def _virtual_read(self, addr: int) -> Union[int, float]:
+    def _virtual_read(self, addr: int) -> float:
         raise NotImplementedError("Must be implemented.")
 
-    def _virtual_write(self, addr: int, value: Union[int, float]) -> None:
+    def _virtual_write(self, addr: int, value: float) -> None:
         raise NotImplementedError("Must be implemented.")
 
 
@@ -460,7 +460,7 @@ def __write_u8(self, command: int, abyte: int) -> None:
         with self.i2c_device as i2c:
             i2c.write(buf)
 
-    def _virtual_read(self, addr: int) -> Union[int, float]:
+    def _virtual_read(self, addr: int) -> float:
         """read a virtual register"""
         while True:
             # Read slave I2C status to see if the read buffer is ready.
@@ -480,7 +480,7 @@ def _virtual_read(self, addr: int) -> Union[int, float]:
         data = self._read_u8(_AS726X_SLAVE_READ_REG)
         return data
 
-    def _virtual_write(self, addr: int, value: Union[int, float]) -> None:
+    def _virtual_write(self, addr: int, value: float) -> None:
         """write a virtual register"""
         while True:
             # Read slave I2C status to see if the write buffer is ready.
@@ -559,7 +559,7 @@ def _uart_xfer(self, cmd: Optional[str]) -> str:
             return resp.rstrip(b" OK\n")
         return None
 
-    def _virtual_read(self, addr: int) -> Union[int, float]:
+    def _virtual_read(self, addr: int) -> float:
         if addr == _AS726X_HW_VERSION:
             # just return what is expected
             return 0x40
@@ -582,7 +582,7 @@ def _virtual_read(self, addr: int) -> Union[int, float]:
             resp = resp.decode().split(",")
             return float(resp[_COLOR_REGS_CALIBRATED.index(addr)])
 
-    def _virtual_write(self, addr: int, value: Union[int, float]) -> None:
+    def _virtual_write(self, addr: int, value: float) -> None:
         if addr == _AS726X_CONTROL_SETUP:
             # check for reset
             if (value >> 7) & 0x01: